What is MIME Types?
A MIME type (or content-type) indicates the nature of a file so browsers and servers handle it correctly: showing an image, running a script or downloading a document. Setting the right content-type is key when serving files or building HTTP responses.
This reference maps the most common file extensions to their corresponding MIME type —from .json to application/json, from .webp to image/webp— so you don't have to memorize them when configuring your server or handling file uploads.
Frequently asked questions
Is it free?
Yes, all NewKit tools are completely free.
Is my data sent to a server?
No. Processing happens 100% in your browser, so it is safe even for sensitive data.